Во сколько раз увеличится центростремительное ускорение точек обода колеса, если период обращения колеса уменьшится в 2 раза?

When she came to his home she Didn't know that he want to leave for Astana.

Aida told ud that he would like to invite us to his birthday party in January.

My sister promised that she will finish her work in two days.

He asked me if I want to live in Paris 2 years befour.